Digital Camera OpticsBy Alan Bozarth, University of North Carolina at Asheville, USA

Ever wondered what your cell phone camera looks like from the inside? Ever wonder how it works? In this video, we explore the optical technology behind the camera capture devices in cell phones and digital cameras. We have a brief overview about CMOS sensors and CCD arrays, and how the photoelectric effect makes digital picture-taking possible.

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Researchers have developed a new terahertz imaging approach that, for the first time, can acquire micron-scale resolution images while retaining computational approaches designed to speed up image acquisition. This combination could allow terahertz imaging to be useful for detecting early-stage skin cancer without requiring a tissue biopsy from the patient.

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